public void TotalTest()
{
const string ErrorMessage = "TestErrorMessage";
const string WarningMessage = "TestErrorMessage";
const string ExceptionMessage = "TestException";
var exception = new Exception(ExceptionMessage);
var instance = new SynchronizationContext();
instance.AddError(ErrorMessage);
instance.AddWarning(WarningMessage);
instance.AddException(exception);
Assert.AreEqual(ErrorMessage, instance.Errors.First());
Assert.AreEqual(WarningMessage, instance.Warnings.First());
Assert.AreEqual(ExceptionMessage, instance.Exceptions.First().Message);
}